<template>
    <el-breadcrumb class="app-breadcrumb" separator="/">
      <transition-group name="breadcrumb">
        <el-breadcrumb-item v-for="(item,index) in levelList" :key="item.path">
          <span v-if="item.redirect === 'noRedirect' || index == levelList.length - 1" class="no-redirect">{{ item.meta.title }}</span>
          <a v-else @click.prevent="handleLink(item)">{{ item.meta.title }}</a>
        </el-breadcrumb-item>
      </transition-group>
    </el-breadcrumb>
  </template>
  
  <script>
  export default {
    data() {
      return {
        levelList: null
      }
    },
    watch: {
      $route(route) {
        this.getBreadcrumb()
      }
    },
    created() {
      this.getBreadcrumb()
    },
    methods: {
      getBreadcrumb() {
        let matched = this.$route.matched.filter(item => item.meta && item.meta.title)
        this.levelList = matched.filter(item => item.meta && item.meta.title && item.meta.breadcrumb !== false)
      },
      isDashboard(route) {
        const name = route && route.name
        if (!name) {
          return false
        }
        return name.trim() === 'Index'
      },
      handleLink(item) {
        const { redirect, path } = item
        if (redirect) {
          this.$router.push(redirect)
          return
        }
        this.$router.push(path)
      }
    }
  }
  </script>
  
  <style lang="less" scoped>
  .app-breadcrumb.el-breadcrumb {
    display: inline-block;
    font-size: 14px;
    line-height: 50px;
    margin-left: 8px;
  
    .no-redirect {
      color: #97a8be;
      cursor: text;
    }
  }
  </style>
  